Displaying images on total internal reflective displays

ABSTRACT

A total internal reflection-based display may be driven by an apparatus and method to move electrophoretically mobile particles into and out of an evanescent wave region to create static and video images. The apparatus may comprise one or more of a host microprocessor/controller, display controller, TIR display panel, frame buffer memory 1, frame buffer memory 2, host interface, temperature/environmental sensor, timing controller, look up table, power management integrated circuit or display panel interface.

RELATED APPLICATIONS

The instant specification claims priority to the U.S. ProvisionalApplication Ser. No. 62/510,272 (filed May 24, 2017). The instantapplication also claim priority to application Ser. No. 15/143,708(filed May 2, 2016), which is a Continuation-In-Part (“CIP”) ofapplication Ser. No. 14/903,547 (filed Feb. 5, 2016) which claimedpriority to PCT Application Serial No. WO2015/005899A2 (filed Jul. 8,2013). The specification of each of the foregoing applications isincorporated herein in its entirety.

FIELD

The disclosed embodiments generally relate to total internal reflection(TIR) in high brightness, wide viewing angle image displays. In oneembodiment, the disclosure relates to an apparatus for driving staticand video images in TIR-based image displays.

BACKGROUND

Conventional total internal reflection (TIR) based displays include,among others, a transparent high refractive index front sheet in contactwith a low refractive index fluid. The front sheet and fluid may havedifferent refractive indices that may be characterized by a criticalangle θ_(c). The critical angle characterizes the interface between thesurface of the transparent front sheet (with refractive index η₁) andthe low refractive index fluid (with refractive index 173). Light raysincident upon the interface at angles less than θ_(c) may be transmittedthrough the interface. Light rays incident upon the interface at anglesgreater than θ_(c) may undergo TIR at the interface. A small criticalangle (e.g., less than about 50°) is preferred at the TIR interfacesince this affords a large range of angles over which TIR may occur. Itmay be prudent to have a fluid medium with preferably as small arefractive index (η₃) as possible and to have a transparent front sheetcomposed of a material having a refractive index (η₁) preferably aslarge as possible. The critical angle, θ_(c), is calculated by thefollowing equation (Eq. 1):

$\begin{matrix}{\theta_{c} = {\sin^{- 1}\left( \frac{\eta_{3}}{\eta_{1}} \right)}} & (1)\end{matrix}$

Conventional TIR-based reflective image displays further includeelectrophoretically mobile, light absorbing particles. Theelectrophoretically mobile particles move in response to a bias betweentwo opposing electrodes. When particles are moved by a voltage biassource to the surface of the front sheet they may enter the evanescentwave region (depth of up to about 1 micron) and frustrate TIR. Theevanescent wave region depth may vary due to such variables as thewavelength of the incident light, the angle of the incident light andthe refractive indices of the front sheet and the medium. Incident lightmay be absorbed by the electrophoretically mobile particles to create adark, grey or colored state observed by the viewer. The states may bedependent on the number of particles and their location within theevanescent wave region. The dark or colored state may be the color ofthe particles or a color filter. Under such conditions, the displaysurface may appear dark or black to the viewer. When the particles aremoved out of the evanescent wave region (e.g., by reverse biasing),light may be reflected by TIR. This creates a white, bright or greystate that may be observed by the viewer. An array of pixelatedelectrodes may be used to drive the particles into and out of theevanescent wave region at individual pixels to form combinations ofwhite and colored states, such as near the surface of a color filter.The combinations of white and colored states may be used to createimages or to convey information to the viewer.

The front sheet in conventional TIR-based displays typically includes aplurality of higher refractive index close-packed convex structures onthe inward side facing the lower refractive index medium andelectrophoretically mobile particles (i.e., the surface of the frontsheet which faces away from the viewer). The convex structures may behemispherically-shaped but other shapes may be used. A conventionalTIR-based display 100 is illustrated in FIG. 1A. Display 100 is shownwith a transparent front sheet 102 with outer surface 104 facing viewer106. Display 100 further comprising a layer of a plurality 108 ofhemispherically-shaped protrusions 110, rear support sheet 112,transparent front electrode 114 on the surface of the plurality ofindividual hemispherically-shaped protrusions 110 and rear electrode116. Rear electrode 116 may comprise a passive matrix array ofelectrodes, a thin film transistor (TFT) array or a direct drive arrayof electrodes. The rear array of electrodes may be formed in an array ofpixels wherein each pixel may be driven by a TFT. FIG. 1A also shows lowrefractive index fluid 118 which is disposed within the cavity or gap120 formed between the surface of protrusions 108 and rear support sheet112. Fluid 118 contains a plurality of light absorbingelectrophoretically mobile particles 122. Display 100 may furtherinclude a voltage source 124 capable of creating a bias across cavity120. Display 100 may further comprise one or more dielectric layers 126,128 on front electrode 114 or rear electrode 116 or on both the frontand rear electrodes, and a color filter layer 130. When particles 122are electrophoretically moved towards front electrode 114 and into theevanescent wave region, they may frustrate TIR. This is shown to theright of dotted line 132 and is illustrated by incident light rays 134and 136 being absorbed by particles 122. This area of the display, suchas at a pixel, may appear as a dark, colored or grey state to viewer106.

When particles are moved away from front sheet 102 and out of theevanescent wave region towards rear electrode 116 (as shown to the leftof dotted line 132) incident light rays may be totally internallyreflected at the interface of the surface of electrode 126 on convexprotrusion array 108 and medium 118. This is represented by incidentlight ray 138, which is totally internally reflected and exits thedisplay towards viewer 106 as reflected light ray 140. The display pixelmay appear white, bright or grey to the viewer.

Conventional TIR-based display 100 may further comprise cross-walls 142that bridge front sheet 102 to rear sheet 112. Cross-walls may compriseat least one dielectric layer 144. Display 100 may further comprise adirectional front light system 146. Front light system 146 may compriselight source 148 and waveguide 150. Display 100 may further comprise anambient light sensor (ALS) 152 and front light controller 154.

FIG. 1B schematically illustrates a cross-section of a portion of aconventional TIR-based display showing the approximate location of theevanescent wave region. Drawing 180 in FIG. 1B is a close-up view of aportion of drawing 100 in FIG. 1A. The evanescent wave region is locatedat the interface of higher refractive index protrusions 110 and lowerrefractive index medium 118. This location is illustrated in drawing180, the evanescent wave region 182 is located between dotted line 184and top layer 126. The evanescent wave is typically conformal to thesurface of layer of protrusions 108. The depth of the evanescent waveregion is about 1 micron, as previously mentioned.

Optical states in TIR-based image displays may be modulated by movementof electrophoretically mobile particles into and out of the evanescentwave region at the interface of a high refractive index convexprotrusions and a low refractive index medium. The movement of theparticles may be controlled by an apparatus for driving static and videoimages in TIR-based reflective image displays.

BRIEF DESCRIPTION OF DRAWINGS

These and other embodiments of the disclosure will be discussed withreference to the following exemplary and non-limiting illustrations, inwhich like elements are numbered similarly, and where:

FIG. 1A schematically illustrates a cross-section of a portion of aconventional TIR-based display;

FIG. 1B schematically illustrates a cross-section of a portion of aconventional TIR-based display showing the approximate location of theevanescent wave region; and

FIG. 2 schematically illustrates one embodiment of an apparatus fordriving static and video images for TIR-based reflective image displays.

DETAILED DESCRIPTION

Throughout the following description specific details are set forth inorder to provide a more thorough understanding to persons skilled in theart. However, well-known elements may not have been shown or describedin detail to avoid unnecessarily obscuring the disclosure. Accordingly,the description and drawings are to be regarded in an illustrative,rather than a restrictive or exclusive, sense.

This disclosure generally relates to a TIR-based reflective imagedisplay. According to certain embodiments of the disclosure, a TIR-basedreflective image display may be driven by an apparatus and method tocreate one or more of static and/or video images. This may apparatus mayinclude one or more of a host microprocessor, look-up table (LUT), powermanagement integrated circuit (PMIC) or display controller. In someembodiments, the apparatus may further include one or more of a timingcontroller (TCON), on or off-chip memory such as dynamic random-accessmemory (DRAM), secure digital (SD) card, light sensor, temperaturesensor or an environmental sensor.

FIG. 2 schematically illustrates one embodiment of an apparatus fordriving static and video images for TIR-based reflective image displays.TIR-based reflective image displays are displays where the totallyinternally reflected light may be modulated. Modulation of the light maybe carried out by frustration of totally internally reflected light. Inan exemplary embodiment, this may be completed by movingelectrophoretically mobile light absorbing particles into and out of theevanescent wave region. In some embodiments, this may be completed by amicroelectromechanical system (MEMS). In other embodiments, this may becompleted by an electrowetting system. An electrowetting system maycomprise a polar light absorbing colored fluid in a non-polartransparent fluid. Frustration of TIR may be carried out by moving apolar light absorbing colored fluid into the evanescent wave region.Conversely, reflection (or degree of reflection) can be modulated bymoving the polar light absorbing colored fluid out of the evanescentwave region.

In some embodiments, an apparatus to drive static and video images forTIR-based reflective image displays may comprise a display unit thatsupports processing of static images and video data, driving voltagesand waveforms. The waveforms may comprise various driving voltages anddurations of time at which the voltages are applied.

The display unit 200 may comprise a host microprocessor/controller 202.The host microprocessor/controller 202 may process image/video data froma native format to a suitable format for the display controller unit204. The host microprocessor/controller 202 may be interfaced (notshown) to an off-chip memory such as SD-card, DRAM or any other memorydevices containing image/video data (not shown). Depending on the sizeof the content (image/video) it could be stored internally in theHost/CPU (interchangeably, processor/controller) 202.

Processor/controller 204 may comprise hardware, software or acombination of hardware and software (e.g., firmware). In certainembodiments, display controller 204 may be integrated with CPU 202(e.g., on the same die). Image/video data may also be generated by anapplication running on top of host CPU 202 such as text editor/viewer,web browser or any other operating system application. Hostprocessor/controller 202 may support display resolution at a given colordepth or grey scale (i.e., 1, 2, 4, 8, 16, 24, 32 bits per pixel (bpp)).For example, a 768×1024 resolution image/video data of a givengrey/color depth should be processed by host processor/controller 202and/or display controller 204 to provide constant updates to the displayat a given frame rate.

In some embodiments, the requirements of frame rate for driving a staticimage may be about one image (frame) per second. In other embodiments, auser defined frame rate may be used that may depend on the hostapplication running on the processor/controller 202. In such a case, ahost processor/controller 202 and/or display controller 204 may be ableto process the image data at a required frame rate at a given resolutionas designated by external factors (e.g., user or input data fromexternal sensors). Frame rate(s) required for video data are much higheras compared to static images. The host processor/controller 202 and/ordisplay controller 204 may be able to process at least 22-24 frames persecond to support a video rate TIR-based EPD display.

In some embodiments, processor/controller 202 may implement a framebuffer memory that is a read-write memory allocated for the storage ofsupplied image/video data. For example, Frame buffer 1 (206) may storethe data of the current frame while Frame buffer 2 (208), may store thedata for the previous frame and/or the next frame to be updated. EachFrame buffer may comprise hardware, software or a combination ofhardware and software. The size of the frame buffer memory may bedependent on several factors and may be obtained as follows: (a)resolution of the display panel 210, and (b) grey levels/color depth ofa given image/video. For example, if display panel 210 has a resolutionof 768×1024 pixels and grey/color depth of 2 (monotonic) then theminimum size of frame buffer would be 768×1024×1 bits as a single bitcan support two grey levels (i.e., “On(G0)” & “OFF(G1)”).

Additional waveforms may be included to compensate for environmentalfactors. For a grey/color depth of 4, the frame size would be increasedto 768×1024×2 bits resulting in storage of data for 4 grey levels foreach pixel (i.e. G0, G2, G3, G1). Depending on the desired frequency ofupdate, grey/color depth levels and the size of frame buffer memory maybe adjusted and additional frame buffer(s) may be implemented within ahost/display controller controlled memory. Frame buffer memory size mayalso be dependent on the type of update performed on the display panel.For instance, if the update on the display panel 210 is performed inincrements of “p” pixels then the frame buffer memory size may beadjusted to “p×q” bits where “p” is the number of pixels and “q” is thegrey/color depth. This type of update could be utilized for static andpartial image updates. Frame buffer memory may also keep track ofcurrent and next images over various time scales to apply appropriateLUT waveforms. In some embodiments, the frame buffer memory may keeptrack of image states over the period of 1 s, 10 s, 100 s, 1000 s orlonger. Processor/controller 202 may transfer this frame buffer data todisplay controller 204 where appropriate waveforms for update on thedisplay panel can be applied. Optionally, processor/controller 202 maypre-process images/video and store differences between current and nextframe to be utilized by the display controller 204 to perform waveformupdates. Waveforms may be altered depending on multiple factors such asenvironment, image history, etc.

Host CPU 202 may offload aforementioned tasks to display controller 204.In such an embodiment, host CPU 202 may provide an interface 212 to thedisplay controller to access data memory and perform required processingon the image/video data along with the task of updating the displaypanel. For example, host CPU 202 may place the desired image/videocontent at a specified memory address accessible to display controller204 to read and process this data through various display updatewaveforms using LUTs before performing a display update.

Display controller 204 may comprise control logic 214. Control logic 214may handle communication between and provide logic required to interfaceTCON 218 with frame buffer 206 and interface TCON 218 with LUT 220.Typically, control logic 214 may be part of display controller IC 204.In some embodiments, control logic 214 may be a separate IC.

Display controller 204 may comprise a display panel interface 216.Display panel interface 216 interfaces the display electronics withdisplay panel 210. Display panel interface 216 may comprise hardware inorder for the display electronics to communicate with display panel 210.

Display controller 204 may comprise a timing controller (TCON) 218. TCON218 may control timing between source and gate source driver ICs. TCONlogic may be in an IC as circuitry. In some embodiments, TCON 218 may bea field-programmable gate array (FPGA). In some embodiments, TCON 218may be implemented in software. TCON (218) may receive image data fromhost CPU (202) and convert signals to control timing of the display.

Processing required by host CPU 202 and/or display controller 204 toperform an update from current to next frame may include one or more ofthe following: (a) frame rate and timing control for static and videoupdates, (b) display update procedures for partial updates, full updatesoff frame buffer and rendering pixel data, (c) interface to a driver ICor a discrete circuitry to generate and control drive voltages on thedisplay panel 210 according to the selected waveform, (d) ambient sensoror interface to such IC used to determine current environmentalconditions, such as temperature, to adapt waveform updates, (e) host,memory and display panel communication interfaces, (f) various colorprocessing algorithms to process image/video data according to thedisplay's color filter arrays (CFAs) and/or pixel layout.

In some embodiments, a system with high resolution may utilize a hostprocessor/controller 202 and/or display controller 204 to perform finaldisplay updates. Such a system may utilize “Gate” and “Source” driverintegrated circuits (IC(s)) which may be placed on or attached to thedisplay panel to interface with the metallic or ITO traces from gate andsource lines of the active-matrix thin film transistor (TFT). In such anapparatus, display controller 204 provides an interface to these driverICs on display panel 210.

In some embodiments, a display unit 200 may utilize an integrateddisplay controller IC to drive lower resolution displays. Suchintegrated display controller ICs may be placed as chip on glass (COG)or as chip on flex (COF) instead of being placed on a printed circuitboard (PCB). These IC's may be designed as custom ASIC to support agiven display resolution within a certain frame rate and voltage range.However, their functionality may closely resemble the functionsdescribed above with the display controller.

For example an integrated display controller with a frame buffer size of240×320 may support a maximum display resolution of 240×320 pixels andsmaller resolution. Integrated display controller IC(s) may offerbenefits in small resolution displays and wearable applications byoff-loading most of the display update tasks from the host processorresulting in power savings. In such a system the host processor mayprovide an interface to the slave integrated display controller IC(s)which in turn may store the frame buffer, waveform LUTs 220 andgenerates all the required voltages and timing for a given displayupdate. Display unit 200 may further comprise one or more of an ambientor environmental sensor 222. Data from sensor 222 may be used todetermine which waveform may be needed to be applied to change fromcurrent frame to the next frame.

A TIR-based reflective image display may be driven to create staticimages and video rate data by moving electrophoretically mobileparticles into and out of an evanescent wave region by one embodiment ofa method. The method may comprise:

-   -   1) The host processor/controller generates a request to fetch        the required data from an on-chip or off-chip memory location.        In case of a display controller the host processor updates the        display controller by providing a memory or address pointer that        may point to the first location of the requested data and then        passing the control of memory bus to the display controller. All        subsequent fetches to the data may be done by incrementing the        pointer internally on the display controller;    -   2) Image/video frame data may be converted from its native        format to a raw binary format. Native format of the data may        have information about the nature of the frame data (i. e. frame        type—static/video, mono/grey/color depth, resolution, maximum        grey levels, compression type, frame rate, etc). This metadata        may be used by the host processor/controller 202 or display        controller 204 to convert the frame in a suitable format which        may contain all of the information to update the display panel        through selected LUT 220.    -   3) Updating the display panel frame may first requires one or        more of the host processor or display controller to compare two        sets of frame buffer memories: current frame to be displayed and        previous frame. The data of current frame is stored in frame        buffer memory 1 206 where it could be used to perform refreshes        to the current frame based on a selected waveform. Data from a        new frame may be stored in frame buffer memory 2 208 and may be        used to update the display panel to the next frame. The host        processor or display controller may perform a real time        comparison of the previous frame currently displayed with the        new frame (new update to display) and determine the changes that        may be required to change from the current frame to a new frame.        This may lead to no change in a pixel's optical state or a        change in a pixel's optical state from grey/color level “Gn” to        “Gm”. This may further lead to derivation of waveform        transactions required for each pixel to change from current        image to next image;    -   4) Environmental conditions may be determined by the host        processor/controller 202 or display controller 204 through        ambient senor 222 to assist in the selection of a correct        waveform according to current environmental conditions. Based on        the result from 3), the host processor/controller or display        controller may select an appropriate waveform from previously        designed waveforms stored in the LUT 220. The LUT 220 may be        stored in host processor/controller 202 and/or display        controller 204 or on an external memory. A host        processor/controller with access to the LUT 220 can then select        the appropriate waveform for rendering an update to the display;    -   5) If a display controller 204 is present in an embodiment of        the system, it may send the final image/video frame update data        to the display panel and may utilize PMIC or a discrete circuit        to generate the required voltage according to the selected        waveform; and    -   6) The final update on the display panel may be performed frame        by frame according to the selected waveform in LUT with precise        timing controlled by TCON 218.

In the exemplary display embodiments described herein, they may be usedin Internet of Things (IoT) devices. The IoT devices may comprise alocal wireless or wired communication interface to establish a localwireless or wired communication link with one or more IoT hubs or clientdevices. The IoT devices may further comprise a secure communicationchannel with an IoT service over the internet using a local wireless orwired communication link. The IoT devices comprising one or more of thedisplay devices described herein may further comprise a sensor. Sensorsmay include one or more of a temperature, humidity, light, sound,motion, vibration, proximity, gas or heat sensor. The IoT devicescomprising one or more of the display devices described herein may beinterfaced with home appliances such as a refrigerator, freezer,television (TV), close captioned TV (CCTV), stereo system, heating,ventilation, air conditioning (HVAC) system, robotic vacuum, airpurifiers, lighting system, washing machine, drying machine, oven, firealarms, home security system, pool equipment, dehumidifier ordishwashing machine. The IoT devices comprising one or more of thedisplay devices described herein may be interfaced with healthmonitoring systems such as heart monitoring, diabetic monitoring,temperature monitoring, biochip transponders or pedometer. The IoTdevices comprising one or more of the display devices described hereinmay be interfaced with transportation monitoring systems such as thosein an automobile, motorcycle, bicycle, scooter, marine vehicle, bus orairplane.

In the exemplary display embodiments described herein, they may be usedin IoT and non-IoT applications such as in, but not limited to,electronic book readers, portable computers, tablet computers, cellulartelephones, smart cards, signs, watches, wearables, military displayapplications, automotive displays, automotive license plates, shelflabels, flash drives and outdoor billboards or outdoor signs comprisinga display. The displays may be powered by one or more of a battery,solar cell, wind, electrical generator, electrical outlet, AC power, DCpower or other means.

The following relate to exemplary and non-limiting embodiments which maybe implemented according to the disclosed principles. Example 1 relatesto a Total Internal Reflective (TIR) display configured for static anddynamic data display, the display comprising: a host processor toprocess image data from a native format to a TIR-suitable format; adisplay controller in communication with the host processor, the displaycontroller configured to receive the processed image data from the hostprocessor, the display controller further comprising: a first framebuffer to store data for a current frame, a second frame buffer to storedata for at least one of a previous or a subsequent frame, a controllogic, and a look up table (LUT) to store a plurality of waveformcorresponding to each of a plurality of image display requirements; adisplay panel having an opposing electrode pair and a plurality ofelectrophoretically mobile particles disposed in a medium bound by theopposition electrode pair, the plurality of electrophoretically mobileparticles configured to move proximal to one of the electrodes in theelectrode pair to at least one of totally internally reflect an incomingray of light or to frustrate the incoming ray of light; wherein thedisplay controller is configured to apply at least one waveform todisplay one of a static or dynamic image. The embodiments of example 1may be implemented in software, hardware or a combination of softwareand hardware (e.g., firmware).

Example 2 relates to the TIR display of example 1, wherein the displaycontroller is configured to apply a first voltage bias to the pluralityof electrophoretically mobile particles to thereby move at least one ofthe plurality of electrophoretically mobile particles proximal to afirst electrode of the opposing electrode pair to thereby frustrate TIR.

Example 3 relates to the TIR display of example 1, wherein the displaycontroller is configured to apply a second voltage bias to the pluralityof electrophoretically mobile particles to thereby move at least one ofthe plurality of electrophoretically mobile particles proximal to asecond electrode of the opposing electrode pair to thereby frustrateTIR.

Example 4 relates to the TIR display of example A, further comprising anambient sensor to communicate with the control logic to provide data forselecting select a waveform to change from a current frame to asubsequent frame.

Example 5 relates to the TIR display of example 1, wherein one or moreof the host processor and the display controller are further configuredto: (a) control and update frame rate and display timing, (b) displayupdate procedures for partial updates, full updates of frame buffer andrendering pixel data, (c) interface to a driver integrated circuitry(IC) or a discrete circuitry to generate and control a drive voltage onthe display panel, (d) interface an ambient sensor to determine anenvironmental condition and to adapt waveform updates, and (0 processalgorithms to display color image and/or video data to accommodate acolor filter arrays (CFAs) of the display.

Example 6 relates to the TIR display of example 1, an integrated displaycontroller circuitry to drive a lower display resolution.

Example 7 relates to the TIR display of example 1, wherein at least oneof the host processor or the display controller is configured to comparea current frame and a subsequent frame to update the display panel witha refresh waveform prior to displaying the subsequent frame and whereinthe current frame is stored in the first frame buffer and the subsequentframe is stored at the second frame buffer.

Example 8 relates to the TIR display of example 1, wherein the refreshwaveform is different from a waveform used to display the current frame.

Example 9 relates to the TIR display of example 1, wherein the hostprocessor and the display controller are configured on a semiconductordie.

Example 10 relates to a method to display an image on a Total InternalReflective (TIR) display, the method comprising: processing native imagedata to provide processed image data; storing a first portion of theprocessed image data at a first memory location and storing a secondportion of the processed image data at a second memory location;receiving a first ambient signal, the first ambient signal representingan ambient display condition at a first time frame; selecting a firstwaveform and a first voltage to display the first portion of theprocessed image data as a function of the first ambient signal;receiving a second ambient signal, the second ambient signalrepresenting an ambient display condition at a second time frame; andselecting a second waveform and a second voltage to display the secondportion of the processed image data as a function of the second ambientsignal; applying the second waveform and the second voltage to at leastone of a first and second electrodes to move a plurality ofelectrophoretically mobile particles from the first electrode to thesecond electrode to absorb an incoming ray of light at an evanescentwave region formed proximal to the second electrode to thereby provide adark state display.

Example 11 relates to the method of example 11, wherein the ambientdisplay condition represented one of ambient light or ambienttemperature.

Example 12 relates to the method of example 11, wherein the secondportion of the processed image data represents an image to be displayedby the TIR display after displaying image data represented by the firstportion of the processed image data.

Example 13 relates to the method of example 11, wherein the mobileparticles are disposed in a medium.

Example 14 relates to the method of example 11, wherein at least one ofthe second waveform or the second voltage is configured to move aplurality of electrophoretically mobile particles from a first electrodeto a second electrode to absorb an incoming ray of light at anevanescent wave region proximal to the second electrode to therebysubstantially prevent TIR.

Example 15 relates to the method of example 11, wherein the evanescentwave region is formed at the second electrode proximal to the surface ofthe display.

Example 16 relates to the method of example 11, further comprisingapplying the first waveform and the first voltage to at least one of thefirst and second electrodes to move the plurality of electrophoreticallymobile particles from the second electrode to the first electrode tosubstantially reflect an incoming light ray to thereby provide TIR.

While the principles of the disclosure have been illustrated in relationto the exemplary embodiments shown herein, the principles of thedisclosure are not limited thereto and include any modification,variation or permutation thereof.

1. A method to display an image on a Total Internal Reflective (TIR)display, the method comprising: processing native image data to provideprocessed image data; storing a first portion of the processed imagedata at a first memory location and storing a second portion of theprocessed image data at a second memory location; receiving a firstambient signal, the first ambient signal representing an ambient displaycondition at a first time frame; selecting a first waveform and a firstvoltage to display the first portion of the processed image data as afunction of the first ambient signal; receiving a second ambient signal,the second ambient signal representing an ambient display condition at asecond time frame; selecting a second waveform and a second voltage todisplay the second portion of the processed image data as a function ofthe second ambient signal; and applying the second waveform and thesecond voltage to at least one of a first and second electrodes to movea plurality of electrophoretically mobile particles from the firstelectrode to the second electrode to absorb an incoming ray of light atan evanescent wave region formed proximal to the second electrode tothereby provide a dark state of the TIR display at the second electrode.2. The method of claim 1, wherein the ambient display conditionrepresents one of ambient light or ambient temperature.
 3. The method ofclaim 1, wherein the second portion of the processed image datarepresents an image to be displayed by the TIR display after displayingimage data represented by the first portion of the processed image data.4. The method of claim 1, wherein the mobile particles are disposed in amedium.
 5. The method of claim 1, wherein the dark state of the TIRdisplay is one in which TIR is substantially prevented for the TIRdisplay at the second electrode.
 6. The method of claim 1, wherein theevanescent wave region is formed at the second electrode proximal to thesurface of the display.
 7. The method of claim 1, further comprisingapplying the first waveform and the first voltage to at least one of thefirst and second electrodes to move the plurality of electrophoreticallymobile particles from the second electrode to the first electrode tosubstantially reflect an incoming light ray to thereby provide TIR. 8.One or more non-transitory computer-readable media containinginstructions that, when executed by one or more processors, causes asystem that includes a Total Internal Reflective (TIR) display toperform one or more operations, the operations comprising: processingnative image data to provide processed image data; storing a firstportion of the processed image data at a first memory location andstoring a second portion of the processed image data at a second memorylocation; receiving a first ambient signal, the first ambient signalrepresenting an ambient display condition at a first time frame;selecting a first waveform and a first voltage to display the firstportion of the processed image data as a function of the first ambientsignal; receiving a second ambient signal, the second ambient signalrepresenting an ambient display condition at a second time frame; andselecting a second waveform and a second voltage to display the secondportion of the processed image data as a function of the second ambientsignal; sending an instruction to apply the second waveform and thesecond voltage to at least one of a first and second electrodes to movea plurality of electrophoretically mobile particles from the firstelectrode to the second electrode to absorb an incoming ray of light atan evanescent wave region formed proximal to the second electrode tothereby provide a dark state of the TIR display at the second electrode.9. The non-transitory computer-readable media of claim 8, wherein theambient display condition represents one of ambient light or ambienttemperature.
 10. The non-transitory computer-readable media of claim 8,wherein the second portion of the processed image data represents animage to be displayed by the TIR display after displaying image datarepresented by the first portion of the processed image data.
 11. Thenon-transitory computer-readable media of claim 8, wherein the mobileparticles are disposed in a medium.
 12. The non-transitorycomputer-readable media of claim 8, wherein the dark state of the TIRdisplay is one in which TIR is substantially prevented for the TIRdisplay at the second electrode.
 13. The non-transitorycomputer-readable media of claim 8, wherein the evanescent wave regionis formed at the second electrode proximal to the surface of thedisplay.
 14. The non-transitory computer-readable media of claim 8,wherein the operations further comprise sending a second instruction toapply the first waveform and the first voltage to at least one of thefirst and second electrodes to move the plurality of electrophoreticallymobile particles from the second electrode to the first electrode tosubstantially reflect an incoming light ray to thereby provide TIR. 15.A system comprising: a Total Internal Reflective (TIR) display; one ormore processors; one or more non-transitory computer-readable mediacontaining instructions that, when executed by one or more processors,causes the system to perform one or more operations, the operationscomprising: processing native image data to provide processed imagedata; storing a first portion of the processed image data at a firstmemory location and storing a second portion of the processed image dataat a second memory location; receiving a first ambient signal, the firstambient signal representing an ambient display condition at a first timeframe; selecting a first waveform and a first voltage to display thefirst portion of the processed image data as a function of the firstambient signal; receiving a second ambient signal, the second ambientsignal representing an ambient display condition at a second time frame;and selecting a second waveform and a second voltage to display thesecond portion of the processed image data as a function of the secondambient signal; sending an instruction to apply the second waveform andthe second voltage to at least one of a first and second electrodes tomove a plurality of electrophoretically mobile particles from the firstelectrode to the second electrode to absorb an incoming ray of light atan evanescent wave region formed proximal to the second electrode tothereby provide a dark state of the TIR display at the second electrode.16. The system of claim 15, wherein the ambient display conditionrepresents one of ambient light or ambient temperature.
 17. The systemof claim 15, wherein the second portion of the processed image datarepresents an image to be displayed by the TIR display after displayingimage data represented by the first portion of the processed image data.18. The system of claim 15, wherein the dark state of the TIR display isone in which TIR is substantially prevented for the TIR display at thesecond electrode.
 19. The system of claim 15, wherein the evanescentwave region is formed at the second electrode proximal to the surface ofthe display.
 20. The system of claim 15, wherein the operations furthercomprise sending a second instruction to apply the first waveform andthe first voltage to at least one of the first and second electrodes tomove the plurality of electrophoretically mobile particles from thesecond electrode to the first electrode to substantially reflect anincoming light ray to thereby provide TIR.